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Bug #31575 fpassthru, binary mode
Submitted: 2005-01-16 18:56 UTC Modified: 2005-01-16 21:41 UTC
From: kingoleg at mail dot ru Assigned:
Status: Not a bug Package: Filesystem function related
PHP Version: 4.3.10 OS: Linux version 2.4.20-8,Red Hat
Private report: No CVE-ID: None
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 [2005-01-16 18:56 UTC] kingoleg at mail dot ru 
Description:
------------
It seems, that fpassthru() is not binary safe


Reproduce code:
---------------
First 8 bytes of file (PNG image) on disk:

"89 50 4E 47 0D 0A 1A 0A"

<?php
//...
$f = @fopen( $filepath, "rb" );
@fpassthru ($f);
//...die();
?>

Expected result:
----------------
First 8 bytes of saved file via browser:

"89 50 4E 47 0D 0A 1A 0A"

Actual result:
--------------
First 8 bytes of saved file via browser:

"0A 89 50 4E 47 0A 1A 0A"

PS. Other bytes of files are equal.

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 [2005-01-16 19:32 UTC] wez@php.net 
You've probably got a newline at the top of your script, before the <?php, or a trailing newline from some include or auto-prepend file.
 [2005-01-16 20:10 UTC] kingoleg at mail dot ru 
No.

Right before @fpassthru ($f); headers sends. So, it can not be a new line before fpassthru, otherwise header(""); write error message. But there is no error messages in error_log, in browset output. And headers are right.
 [2005-01-16 20:11 UTC] wez@php.net 
Comment out the fpassthru() call and look at the page output.
 [2005-01-16 20:58 UTC] kingoleg at mail dot ru 
Sorry. I'm found it. It is not a bug.

The output of script was buffered by ob_start(); So header() does not send warning. After I turned off buffering, I find a line out of php section in config file of this soft.

With commented fpassthru() it outputs "\n\n".
 [2005-01-16 21:41 UTC] tony2001@php.net 
No bug -> bogus.
 
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